Don't let that stop you from playing the ball that is best suited for you!  I prefer the ProV1x over the ProV1, simply because there is less side spin on the tee shots.  I have noticed I hit it a lot straighter, especially with my driver, off of the tee.  It does spin less than the ProV1's, but I have trouble spinning both balls anyway.  Back to the pro aspect: I read on here, many of the men prefer the ProV1x because they spin the ball enough already, that they don't need the spinnier ball.  That in turn is related to the swing speed, so that may be why the women prefer the ProV1.  However, there are a few men that do play the ProV1 on tour.  Either way, play the one that works best for you.  The ProV1 is a great ball, and is by no means a woman's ball.

Don't let swing speed be your deciding factor in a ball.  As most will say you only hit probably 14 drives a round at most.  There are plenty of other reasons to choose a ball for your game.  I like Pro V1 over the X at the moment but am thinking of trying the X again.  Most of my lost strokes come from missing greens on longer shots.  I like the feel of the V1 over the X so its the reason I've stayed with it.  If only I could hit them straighter....

This is something that I have started looking into for myself since I put a lot of spin on the ball, same reason I have a 913 Fd and not F.  I have played Pro V1's and bstone 330s this year, the only reason I tried the 330s is a buddy had them and I noticed I was hitting them straighter then the Pro V1's that I was getting to much side spin from.  Now that I got my swing back I tried the Pro V1x and it has made a big difference especially with my driver.  I know people say you only hit your driver 12-14 times but when you hit 300+ yard drives you need to hit it where you want or you can get yourself in trouble easily.  For me I'm switching to Pro V1x, you might want to find a box of the Pro V1 practice balls since they're a mix of V1 and V1x and see how you hit each.

I myself prefer the ProV1.   I am more accurate to the green with this ball and I lvoe the feel when putting.  15-20 yards off the tee is easily made up with shorter putts.   But I am sure everyone will agree with me when I say this, hit them both and whichever one suits your game better go with.